Pollution in big cities can be controlled to a large extent by

Options

A. By proper sewage and proper exit of chemicals from factories
B. By wide roads and factories away from the city
C. By cleaning city and scanty use of pesticides
D. All of the above

Answer

D

Explanation

The pollution in city like Delhi may be controlled by:-
* By the less use of fertilizers and pesticides as it causes soil pollution and thus decreases the fertility of soil.
* By wide roads and factories away from the cities as it is a major contributor of atmospheric pollution.
* By proper sewage so as to maintain clean and hygienic water.